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Alekssandra [29.7K]
2 years ago
9

There are 16 girls in the

Mathematics
2 answers:
MAVERICK [17]2 years ago
6 0

Answer:

80

Step-by-step explanation:

If 16 is %20 then it represents 1/5 of the class. Multiply 16 x 5 = 80

Helga [31]2 years ago
5 0

Answer:

80 total students

Step-by-step explanation:

hope this helps!

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8 0
3 years ago
at the district competition for the 5th grade jump-rope of the year, The following number of jumps without stopping recorded per
Serggg [28]
Well first to find the mean you will have to add up all the numbers together.
5,299 is the total. After you have done that count how many numbers there are. There are 24 numbers. Divide 5,299 by 24 and you get about 220.8. So the mean is 220.8 To find the median number of jumps, write out all the numbers in order from least to greatest. I think you can do this part! The middle number is your answer. If there is no middle number, get the two numbers that are on each side of the middle and divide by 2. Hope I helped!
4 0
3 years ago
Read 2 more answers
0.25(8)+0.15x=0.35(20+x)
IRINA_888 [86]
X=-25 is the answer.
3 0
3 years ago
A delivery person uses a service elevator to bring boxes of books up to an office. The delivery person weighs 140 lb and each bo
Sindrei [870]

Answer:He can bring up 13.8333333333 boxes each trip

Step-by-step explanation:

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830÷60=13.8333333333

5 0
4 years ago
The weights of packets of cookies produced by a certain manufacturer have a Normal distribution with a mean of 202 grams and a s
Evgen [1.6K]

Answer:

209.005 gms

Step-by-step explanation:

Given that the weights of packets of cookies produced by a certain manufacturer have a Normal distribution with a mean of 202 grams and a standard deviation of 3 grams.

Let X be the weight of packets of cookies produced by manufacturer

X is N(202, 3) gms.

To find the  weight that should be stamped on the packet so that only 1% of the packets are underweight

i.e. P(X<c) <0.01

From std normal table we find that z value = 2.335

Corresponding x value = 202+3(2.335)

=209.005 gms.

5 0
3 years ago
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